The White House late Monday announced President Barack Obama’s intent to appoint Ms. Stevenson as one of the panel’s three members, hours after Mr. Obama formally unveiled the nomination of White House economist Jason Furman to be the CEA chairman. Only the chairman’s position requires Senate confirmation. Ms. Stevenson is expected to take her post this summer, joining the other member, Harvard professor Jim Stock. The panel advises the president on economic policy.

As a former chief economist at the Labor Department, Ms. Stevenson will bring a background that fills a hole on the CEA left by the outgoing chairman, Alan Krueger, a labor economist who will return to Princeton University later this year.

Her research focuses on women’s experiences in the labor market, economic forces shaping families and the value of data about well-being for public policy. (Ms. Stevenson, 42 years old, is a mother of two: three-year-old Matilda and eight-month-old Oliver.)

She also is a popular presence on Twitter, offering her views on economic policy and weighing in with analysis in the minutes after the Labor Department releases its jobs report each month. Her Twitter activity is likely to stop -- or at least diminish substantially -- once she is at the White House.

Her partner, Michigan economist Justin Wolfers, said in a Twitter message after the announcement Monday that the couple will take leave from their posts at the University of Michigan’s Ford School of Public Policy while she is at the CEA. He will spend the next academic year at the Brookings Institution think tank, where he is already a senior fellow. “I'm incredibly proud of @BetseyStevenson, and am looking forward to joining her in DC, reprising the role of ‘supporting partner,’” he wrote.

She was the chief economist at the Labor Department from 2010 to 2011 and before that was an assistant professor at the University of Pennsylvania’s Wharton School. She started her career as a research assistant at the Federal Reserve Board in Washington.